Machine for folding paper or other material



lJa'n.- 15, 1924. 1,480,947

H. J. MULLER MACHINE' FOR FOLDING PAPER OR OTHER MATERIAL 1,480,947 H. J. MULLER FOR FOLDING PAPER OR OTHER MATERIALV Filed Avril 7. 1921 2 Sheetsx-'Sheeiz 2 Jan.' 15,., 1924.

MACHINE Patented Jan. 15,1924.

perreo stares HEINRICH JULIUS MLLER, F SCHAFFHAUSEN, SW,ILEZLIEIIIRCI'JABTID.

-MACHINE FOB FOLDING PAPER OR OTHER MATERIAL.

Appncation filed Aprn 7, 1921. serial No. 459,450.

To all 'whom 'it may concern:

Beit known that I, HnrNRrCH JULIUS MLLER, a subject of Switzerland, residing at Villenstrasse 35, Schaffhausen, in the canton of Schahausen and .State of Switzerland, have invented certain new and use ful Improvements in Machines for Folding Paper or Other Material, of Awhich the following is a specification.v a

This invention has for its object to provide an improved machine for'folding paper or other material in zigzag form which machine allows a very quick and exact folding of the strip of paper or other material and may be used for producing circuit-tickets, sample catalogues, albums etc. in zigzag form. The machine is of simple structure and takes up only a small space.

One embodiment of this invention is illust-rated in the accompanying drawing, in which Figs. 1 and 2 are an'elevation anda plan of the folding machine. Fig. 3 is a vertical section on the line -B of Fig.

4 and Fig. 4 is a horizontal Lsection on the line C-D of Fig. 3. Fig. 5 is an elevation of parts of the machine after folding of a strip. Fig. 6 shows the same parts ready for taking out the folded strip. Figs. 7, 8 and 9 are elevations showing the, folding elements in different posit-ions of operation. Fig. 10 is an end view of a ratchet wheel offa lever having a pawl actuating this wheel' and of a stationary segment keeping the said* pawl out of catch with the said ratchetwheel, and Fig. 11V is a face view of aport-ion of the lower folding plate. Y

1 is the base of the machine, preferably formed by a wooden plate. 'In a U-shap'ed support 2 fixedV to the plate 1 ispivotally journaled, bymeans of pivots 4, a "strip guide 3 to which is pivoted by means of pivots 8 a cover 7 having a longitudinalslot 6 and serving to hold the strip 9 in flat con'- dition and to brake it a little. The Vfree end of the strip guide 3 carries two super posed rotatable rollers 10 between which the strip 9 passes. A screw 11 with knob 12 is rotatably but axially immovably journaled in 4the strip guide 3. The thread' 13 of thisl screw is Vscrewed in the'bloclr14 of a transversally movable bar 16 having upwardly extending fingers 15, so that the-bar 16 may The be adjusted according to the width of the strip to be folded and passing over the guide 3 and laterally shifting of the stripavoided.V Slots 17in the guide 3 and yin the cover7 receive the lingers and' permit of the transversal vmovement of the bar 16.l A rearwardly directed projection 18 of the bar 16 engages a Yblock 19 on the-under side ofthe strip guide 3 and is guided therein whilst a spring 20 wound aro-und the screw 11 and axially pressing thereupon prevents accidental rotation of the screw 11.

Vmechanism imparting a vertical swinging movement to the'strip guide 3 is as follows:

A horizontal pivot pin 22 fixed to anangular bracket 21 carriesa'sleeve 23 which is free to rotate upon the pivot pin y22, but cannot move axially. This sleeve rigidly'sup-Y ports a hand wheel 24with crank 25,a cam 1 26 hereinafter more precisely described and an ordinary eccentric 27. 28 are two pillars fixed to the base 1 and connected one with another by a transverse pin 29'servin'g as a pivot to a two-armed lever 30, 31. The short arm 30 of this lever carries` a roll 32 and is pulled upwardbymeans of a spring 35 'fastened' topa two-armed lever 33,34, in order to keep the ro-l'l 32 in constant contact with the periphery of the eccentric .27. The long 'arm 31V of the lever 30, 31 carries rotatably 'a Vvertical leverfr36 having a handle 37 and an angular slot38, 39 in which rests a in 41 fixed to the free end of an'arrn 40 se- Vcured to the strip guide 3. A spring 42 tends to move'the lever 36 towards 4the guide 3. V'.lherefore.when the guide Vis lifted byl hand, the horizontal portion 39 of the vslot 38, 39 catches the pin 41 as soon as this pin is at the level of the said portion'39 where-VY f by the guide 3 is held inthe raised position and introducing of the stripY in the machine is permitted.

pointed foldingplates 46 and 47 having bored lugn 43 journaled on axles 44 and 45 l Thefolding elements are formed by two respectively, the lower folding. plate 47A having a horizontal slot 48... The axle 44 is rig-j idly Vcarried'by. the `long arm 33 of the saidY Y leverf 33, 34 anda spring 49 -wound around the axle 44 tends to press the folding plate'456 towards a quadrangular casing 50iY Theaxle of the lower folding plate 47 is rigidly carried by the long arm 51 of a two-armed lever 51, 52 journaled on the axle 29 rigidly carried by the pillars 28. A spring 53 wound around the axle 45 tends to press the folding' plate 47 towards the said rasingtl.

The short arm 34 `of the lower 33, 34, and the short arm 52 of the lever 51, 52, carry rolls 54 and 55 respectively whichrolls are pressed on the periphery of the said cam 26 by a spring 56 attached to the arms 34, 52. The rear face of the hand wheel 24 has a notch 58 entered by a roll 59 carried by a flat springy 60 which is attached to the front pillar 28. By these means the hand wheel 24 and thee-ams 26 and 27 may be stopped in the initial position of the machine, see Figs. 1. 3, 5, and 6, in which position .the folding plates 46, 47 are so positioned, that a small space 57 is left to pass through the strip 9. TheVV folding plates 46 and 47 move up and down between the casing 50 and two curved guide plates 61, 62 carriedv by the casing 50. f

In the casing 50 a follower 63 is slidably enclosed. The side walls 64 of this follower carry an axle 65 upon which a jam 66 having downwardly directed arms 67 is fulcrumed. Springs 68 press upon the arms 67 and close the jam 66 against the top of the follower 63 and to hold the strip when it is advanced up to the stops 69 in the said top. Upon a fulcrum 7() fixed to the rear side wall 64 of the casing one-end of a i shaft 71 is journarled, the other end of this shaft being journaled by means of a screw threaded knob 72 in the frontside wall 64 of the casing.v The shaft 71 carries two cams 73 capable of acting upon the arms 67 and to open the jam 66, when the folded strip is to be withdrawn. Springs 74 attached. to the follower 63 and pressing against the bottom of the casing` 50 prevent accidental movement of the follower 63.

One end of a link 7 6` is hinged to a pin 7 5 transversally arranged in the follower 63, the other end being pivotally connected to a lever 78 secured to a horizontal shaft 77. Another lever 7 9 is also fixed to the shaft 77 Vand carries a weight 80 which tends to push the follower 63 towards the folding plates, which stop this movement, see Figs. 3 and 4. The front end of the shaft 77 rigidlycarries a ratchet wheel 81'. The width of the side walls 64 of the follower diminish somewhat to the free end of these walls, so that a slight swinging motion of the follower 63 around the axis of the pin 75 is permitted as it is afterwards more clearly explained.

A door 82 closing the casing 50 towards the front side is hinged upon the shaft 77, see Figs. 1, 5 and 6. A projection 83 of this door carries a pawl 84 engaging at a given momentv the ratchet wheel 81 and imparting to it a slight angular movement, so that moval of the folded strip from the casing Y is assured. A plate 85 secured to t-he front pillar 28 and having a circular edge 86 con centric to the axis of the shaft 77 holds the pawl 84 out of engagement with the ratchet wheel 81 during the'folding operation and during the vreceding of the follower.

A three-armed lever 88-89-90 is hinged at 87 to the door, which has a lug 91 to be' gripped by the operator together with a lug 92 provided at the arm 88. The upright arm 89 of the said lever carries a horizontal pin 93 cooperating with a stationary hook 96 carried by the casing 50 and holding closed the door. A spring 95 attachedA to the third arm 90 and resting on a pin 94 fixed to the door brings the lever 88-899O to its initial position when the lugs 91, 92 are released.

Then the door is fully opened the pin 93 Y y snaps into a. stationary hook 97 fixed to the front pillar 28. Y Y

The operationY of the machine is as foi` lows:

First of all the hand wheel 24 is so positioned that the spring roll 59 catches the notch 58 of this wheel. Thereupon the strip guide 3 is lifted to the highest position in which the portion 39 of the annular slot 38, 39 snaps over the pin 41 of the guide 3 and holds it in the raised position. The cover 7 is now turned back and the/bar 16 with the fingers 15 is adjusted by means of the screw 1l to the width of the strip to be cover 7 until the stripabuts upon the stops V69. Afterwards the knob 72 is turned to the left and the jamb 66 pinches now firmly the front end of the strip. The lever 36 is now pushed to the right, so that the guide 3 dropsV down to the lower end of the angular slot 38, 39, whereby the portion of the strip between the folding platesk 46, 47 and the i guide 3 is bent downward, see Fig. 1, and the ,folding operation facilitated. Breaking of the strip is thereforeavoided. Y

The handwheel 24 is then turned bv means of the crank 25 and thecams 26, 27

move the strip guide 3 and the folding plates 46 and 47 in: the following manner: Startingfrom the initial l.position shownV by Fig. 1 the guide 3' and the upper folding folding plate 47, -move downward, whereby the guide 3 outruns to the folding plate 46.

-plate 46, the latter to the left of the lower nee"V Vber the strip guide is traveling in a-ilv curved guide plate 61.

Burino this downward movement of the guide 23 and the folding plate 46 the folding plate '14.7 remains in its upper position, see l? ig. l, land the strip is folded between the plates e6 and 47. When the plate 46 is about to reach the lowerinost position, see Fir. 'i'. the plate 47 begins to move down ward. The guide 3A begins to move lip-- ward before the plate 4:7 has reached Yits lowermost position. the upper edge of the lower folding plate -l has been lowered beneath the lower edge of the upper folding plate 46, see Fig. S, the plate, under the action of fthespring 4.9, swings so much to the right in a recess 99 provided in the small front face of lthe door 82 and in a similar recess provided in the small front face of the rear wall 100 of the casing 50. that the lower folding plate al?. when moving upward? see arrow in Fig. 8, lays on the left sidev of the upper plate d6 and sharply folds the Vstrip around the pointed lower edge of the fupper vplate 6. Fig'. 9 shows the guide and the plate Ll? in the uppermost position, whilst the upper plate d6 is shown in the 'lowerinost position. The plate i6 then moves upward into the position shown by Fig. l and the plate e7 swings under theV action of itsspring in the said recesses 99 of the door 82 and of the rear wall of the casing 1GO, when the lower edge of the upper plate L6 has been raised above the upper edge of the lower plate. see Fig. 1. In the next downward movement of the upper plate d6 the strip is folded around the upper vedge of the lower plate 47 and trie described operations are repeated. By bending the strip around the edge of the foldingmember by means of the guide before it is sharply folded bythe other folding member a very quick working is allowed without danger of breakage of the strip. "it will be noted that the paper guide 3 reverses its direction of movement at about the time the outer folding plate comes to rest. and that itV travels in oneV direction during both the outward and inward move-v ment of one folding member, and travels in the opposite direction curing both the oiitward and the inward movement of the other folding member. uring Vthe-inward or folding movement of eachk folding mem'- e of said folding member. Due/to the great difference between the maxim im andV minimum radii of the eccen ric QY-and the mai;- iinum and minimum radii of the cani 26, the pap-er guide 3 travels through a vgreater dis,q tance than either of the folding members. d greater than' the distance between the folds of the sheet. The guidel is shownin au roximately its luppermost limiting positioiiinllig. 9g where it will be noted that'the rollers l are above the lower edgef ofthe The rollers'when .in

At the monent when' Vbecause' the pawl Se their lowermost position are-disposed below the upper edge of the lower curved guide plate 62. Whenever yone vplate .46.701247 swings towards the follower, the Vlatter swings slightly aroundtlie of the cross pin 75, to i'it the position of the respective foldingplate and to permit a sharplfolding y.

of the strip. VifThenAthewhole strip 9 has been folded in zigzag form as described, the hand wheel 24 is stopped iii the initial posi'- tion. in whichtliesorine roll 59' enoaoes theV l n :a

lowing way: When the door 82, see Figs. 5 Y

and 6; is opened by releasing the pin 93 of thehook the pawl Sfr glides olf the stationary segment 86, see Figs. 5,- 6fand 10, which prevents the pawl 84e from engagement witlrthe ratchet wheel 8l. pawl 8l Acatches iii a'tooth of the ratchet wheel 8l and slightly turns the same ina clockwise direction. so that the weight is lightly lifted the follower 63 is dis'4 charged of the pressure ofthe weight 89. After this slight additionalangular'move# meut of the ratchet wheel Si. the pin 93 snaps into in the openedposition. The 66 is now opened bja/'turning the knob 72 to the right vand the rstrip 9 released. rlfhe fore Iinger'of theleft hand entering the slot 48 ofthe lower folding plate 47 and the thumb frc the lsaine handV entering a recessflOl' 'of the follower 63 seize the 'folded strip and remove `it from thecasing. Afterwards the door 82is released `of the'hook 97 and closed..

whereby the'ipawl again comes lto ride on the stationary segment`86 and is disen-l A The freed Y' weight 8O drops down and pushes the fol'- gaaed ofthe ratchet wheel 8l.

lower in the initial position; simultaneo-usly"the ratchet wheel 8lv is turned yback also the falling; weight 80. `The machine is'rea'dy'for folding another strip.

shaft 77 f Thus the i thehook 97 Vand holds the door The folded pra-per strip as it is wit idrawn from the Vmachine is'rather puffy and has to be compressed at thek folds with the iin-v gers.' but not each fol d individually, but all f together on each side vof the strip.

It is evident that strips of different Vlength may be folded on ratchet wheel 81 whatever will be the the machine'as described,

engages a tooth of the isa:

' "Themachinealso maybe drivenjby electriolror other power. The folding obtained by this 'machine c .is very'. luniform and enact ree nisr

and the operation exceedingly quick and sure.

According to the articles to be produced, viz, circuit tickets, sample-catalogues, albums, etc., the machine may be constructed in different sizes.

In another embodiment of the machine the strip may be fed vertically and the foldinoA plates may work horizontally.y

What I claim is:- Y

l. In a machine for folding paper or other materials, in combination a hinged guide for the strip to be folded, a pair of reciprocating, spring pressed folding plates one alternately overlapping the other, a follower capable of being pushed backward by the bulk of folded strip and forward by a source of power, a j am arranged on the follower and adapted to grip the front end of the strip, a casing for the folded strip and the follower, a door permitting removal of the folded ystrip from the casing and means operable by the door to release the strip and the follower of the pressure of the source of power when the door is opened, to allow removal of the strip, and to restore the action of the source of power and to push forward the follower when the door is closed.

2. In a machine for folding paper or other materials, in combination a hinged guide for the strip to be folded, a pair of reciprocating, spring pressed folding plates one alternately overlapping the other, a follower capable of being pushed backwards by the bulk of folded strip` and forward by a `source of power, a jam arranged on the follower and adapted to grip the front end of the strip, a casing for the folded strip and the follower, having a small recess into which the folding edge of the overlapping folding plate swings when the lower folding plate is moved away under the overlapping plate, and a door permitting Vremoval of the folded strip from the casing and having a similar recess as has thev casing to receive the folding edge of the overlapping folding plate. Y

8. In a machine for folding paper or other materials, in combination a hinged guide for the strip to be folded, a pair of reciprocating. spring pressed folding plates one alternately overlapping the other, a follower slightly movable around a transverse axis and capable of being pus-hed backward by the hulk of folded strip and forward by a source of power, a jam arranged on the Y follower and adapted to grip the front end of the strip, a casing for the folded strip and the follower, having a small recess into Y which they folding edge of the overlapping folding plate swings when the lower fold f ing lplate is moved away under the overlap- 'ping'.plate, and a door permitting removal ofthe folded .strip from the casing and having a similar recess as has the Vcasing yto receive the folding edge of the overlapping ternately overlapping the other, a follower capable of being pushed backward by the bulk of folded strip and forward by a source of power, a casing for the folded strip Aand the follower, a shaft journaled in the casing carrying an arm connectedv to the follower by means of a link, another arm influenced by the source of power and a ratchet wheel, a door permitting removal of the folded strip from the casing, journaled on the said shaft i' and carrying a pawl adapted to catch the said ratchet wheel and a stationary segment concentric to the ratchet wheel and of such dimensions that the said pawl normally is out 0f engagement with theratchet wheel and only actsupon the ratchet wheel, when the door carrying the pawl is about to be fully opened.

5. In a machine for folding paper or other materials, in combination, a pair of reciproeating, spring pressed folding plates one alternately overlapping the other, a follower Y capable of being pushed back-ward by the bulk of folded strip and forward by a source of power, a casing for the folded strip and the follower, a door permitting removal of folded strip from the casing, means operable by the door to release the strip `and the follower of the pressure of the source of power when the door is opened, to allow removal of the strip, and to restore the action of the source of power and to push forward the follower when the door is closed'- and means for retaining the door in the end positions. Y

6. In a machine for folding paper or other materials, in combination, pair af reciprocating, spring pressed folding plates one aL ternately overlapping` the other., two armed levers carrying theifolding plates and .operated by a cam in such a manner that the low- -er folding plate rests stationary until the overlapping folding platey has slid over the lower plate, whereupon the lower plate is drawn away under the overlapping plate,a follower capableof being pushed backward b the bulk-of folded strip and forward b Va source of power, a casing for the folded strip and the follower, a doorv permitting removaly of the' folded strip from the casing and means operable by the door to release the follower of the pressure of the .source lof power when the door isopened, to allow removalof the strip, and to, restore the action of the source of power when the door is closed.

7. In a machine for folding paper or other materials, in combination a hinged guide for the strip tombe folded, a pair of reciprocating, spring pressed. folding plates one alternate-k 1 ,Alison-17 ly overlapping the other, an eccentric vadapted to actuate the hinged strip guide and to' impart to itan outrunning movement in regard to the acting folding plate, a spring pressed lever adapted to be actuated by rthe said eccentric and having an angular slot adapted to support the strip guide in the lowered position when the machine runs and in the raised position when a strip is to be introduced in the machine and, a'follower capable of being pushed backward by the bulk of folded strip and forward by a source of power.

8. In a machine for folding paper or other materials, in combination a hinged guide for the strip to be folded, having a hinged cover, a stationary upright guide flange and an adj ustable guide bar to guide strips of dierent width, a pair of reciprocating, spring pressed folding plates onealternately overlapping the other, and a follower capable of being pushedibaclrward by the bulk of folded strip and forward by a source of power.

9. In a machine for folding paper or other materials in combination a hinged guide for the strip to be folded, a pair of reciprocating, spring pressed folding plates one alternately overlapping the other, a follower capable of being pushed backward by the bulk of folded strip and forward by a source of power, a jam arranged on the follower and adapted to grip the front end of the strip, and a casing for the folded strip and the follower having stops to limit the advancing of the strip in the jam. Y

10. A machine for folding. a stripV of paper into zigzag form including an open ended casing to receive the packet of folded material, a pair of folding members, means for moving them back and forth across the open end and holding each member substantially stationary during the folding of the material across the edge thereof by the other member, a hinged Vpa'pervdelivering guide, and means for swinging the free end thereof back and forth across the end of the casing adjacent to but spaced from the outer surface of the folding means, the movement of said guide in one direction taking place during the baclr and forth movement of one folding member, and the movement of said guide in the opposite direction taking place during the back and forth movement of the other member.

11. A machine for folding strip of paper into zigzag form including an open ended casing to receive the packet of folded` material, a pair of folding members, means for moving them back and forth across the open end and holding each member substantially stationary during the folding ofthe material across the edge thereof by the other member, a hinged paper delivering guide,`

and means for swinging the freeend thereof back and forth across the end of the casmember and movable inwardly in front of the same to effect the foldingv action and feeding of the folded'material into the casing, a strip delivering guide adjacent to but spaced from saidv folding members, and

means for moving it in one direction in advance of the inward movement of one folding member, and in theV opposite direction 4 in advance of the inward movement Yof the other folding member, each folding member reversing its direction from inward toloutward movement while said guide is intermediate of the limits of its movement.

13. A machine for folding a strip of material into zigzag form, including an open ended casing to receive the packetof folded material, a pair of folding members, a strip delivering guide, a 'rotatable member having Y a cam formoving said folding members alternately and back and forth'across the open end of the casing to overlap each other, and a second cam` of-diffe'rent shape than the first mentioned cam and rotatable about the same axis for swinging said strip guide back and forth acrossthe end of the casing.

' 14. A machine for folding a strip of material into zigzag form, including a pair of reciprocating folding plates each alternately overlapping the other to effect the folding action, a pair of levers connected to said plates, a cam engaging with said levers to swing them alternately, a strip guide, a lever -connected to said guide, and a second cam engaging with said last mentioned lever to swing it back and forth continuously.

15. A machine for folding a strip of material into zigzag form, including an open ended casing, a pair of folding Imembers movable back and forth across the end of said casing, a movable strip guide and a pair of rigidly connected coaxial cams of different form, one serving to operate said folding plates and the other serving to operate said strip'guide.

16. A machine forfolding a strip of material into zigzag form, including an open ended casing for receiving the folded material, a pair of folding members movable alternately and back and forth across the open end of thev casing, each member remaining substantially stationaryduring the outward and return movements of the other member, stopkmeans for holding one member in Outer position and the other in inner position with said members spaced (apart to leave a slot substantially in the plane in which one series of folds of the packet are to lie, a strip guide and means for holding said guide opposite to said slot to facilitate threading of the machine.

17. A machine for foldingl a strip of material into zigzag form, including an open ended casing for receiving the folded material, a pair folding members movable alternately and bacll: and forth across the open end of the casing, each member remaining substantially stationaryv during the outward and return movements of the other member, a guide for delivering the strip of material to be folded, and a reciprocating` member having` means for securing' it to said strip guide in one position to effect the back and forth movement. of the guide, andA in another posit tion.

i8. A machine for fold' into zigzag form, includ j a pair of foldingmembers movable bach and forth alternately into overlapping,` and spaced positions, a strip guide, and means for holding it opposite to the space between said folding menibers to facilitate threading operation.

19. A machine for folding a strip of paper into zigzag form, including a pair of folding members movable back and forth alternately into overlapping 'and spaced positions, a strip guide, means for holding it ion .during threading opera- G a strip of'paper opposite to the space between said foldingr members to facilitate threading operation, a follower, means for yieldingly resisting butJ permitting movement of said follower away from the folding membersupon the accumulation of folded material, and clamp ing means for receiving the entering end of the strip when said folding members are in spaced position-and said strip guide is opposite to said space.

20. A machine for folding` a strip of paper into zigzag form, including an Yopen ended casing for receiving the folded material, a pair of folding members movable back and forth across the open end of the casing, a follower within said casing, a rock shaft, connections between said follower and said roch shaft, and lmeans connected to said rock shaft for yieldingly resisting butJ permitting movement of. said follower away from the open end of said casing.

2i. A machine for folding a strip of paper into zigzag form, including` an open ended casing for receiving,` the folded material, a pair of folding members movable baclrand forth across the open end of the casing a follower within said casing, a rock shaft, connections between said follower and said rock shaft, means connected to said rock shaft for yieldingly resisting,` but permitting movement of said follower away from the open end Yof said casing, and ratchet and pawl mechanism for preventing return movement of said follower.

22. A machine for folding astrip of pa er into zigzag form, including an open en ed casing` for receiving the folded material, a pair of folding members 'movable baci; and forth across the open end of the casing, a follower within said casing, e roch shaft, connections between said follower and said rock shaft, and means connected to said rock shaft for yieldingly resisting but permitting movement of said follower away from the open end yof said casing, one of said members having an aperture therethrough whereby the folded material and follower' maybe forced backway kfrom the folding members to facilitate removal of the folded material from the casing.

23. A machine for folding a strip of paper nto zigzag` form, including-an open ended casin for receiving the folded material, a pair f folding` members movable bach and forth across the open end of the casing, a 1ollower within said casing, a roclr shaft, connections between said follower and said rock shaft, means connected to said rock shaft for yieldingly'resisting but permittingf movement of said follower away from the open end of Said casing, one of said members having an aperture therethrough whereby the folded material and follower may be forced bach away from the folding members to facilitate removal of the material, and ratchet and pawl mechanism for1 preventing return movement of said follower from the last mentioned position.

24;. Pr machine for folding` a strip of material into zigzag form, includingr a casing, a pair of folding" members movable back and forth across the end thereof, a follower, a clamping member pivotally secured to said follower and adapted to grip the entering end of the strip of paper .to be folded in engagement with a side of the -follower ex# tending in the `general direction of the length of movement of the follower and means carried by said follower for operating said clamping member.

ln testimony whereof l have signed my name to this specification in the presence ot two subscribing witnesses.l

HEINRICH otros MLLER.

Witnesses: v

PHYLLIS Borna, VINCENT GUnnJI. 

